Okay, So far I've been playing this by ear but it seems that's not good enough to make a servant. Looks I'll have to bury myself in the wiki and look up everything that could possibly apply to all my chatacters. 

@Grey, thanks for the info. I'll look up all the things you listed in your response, as well as nerf Nidhogg's abilities, as well as Solomon's stats. Geez, this is all a helluva lot more complicated than I first thought. But It'll be worth it once the RP starts.